Deloca

's profile
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Designer/Educator

Electronics hobbyist, engineer, physicist. I have lived and worked in quite a few places around the world. Overall, I believe in a united, peaceful and caring humanity since we have one home that connects all of us. Planet Earth.


Deloca

's contributions
  • 10.17.2012
  • 5 tech points the presidential debate missed
  • The great thing about science/engineering is that they find alternatives to problems such as the one you describe. The solution is to recognize the importance of support for programs that ultimately aid that drive - namely better childhood education, better focus on education outcomes and committed funding from government. I am sure that with serious research alternatives to being blackmailed with "rare earth" metals can be found, just as alternatives to energy of oil supplies can also be found. The key is to understand the politics better and undertake to identify and isolate our own national forces that benefit from such continuance. No, I am NOT naive. Neither are the brilliant ENGINEERs reading this page.
  • 09.26.2012
  • Morse code on Earth
  • For me the beauty of Morse code is not just it can be used with radio, but literally any carrier signal that can be modulated with "on-off" actions. For instance, visible light using a bulb or even a mirror reflecting a bright source of light such as the sun. As someone mentions on the page, in a disaster scenario there may be no other way to communicate the state of survivors other than using Morse with the available medium.
  • 09.26.2012
  • Slideshow: NASA Space Launch System
  • It's all good, I suppose. However, these scenes are too vaguely familiar for my liking. Surely by now we would have a radical new propulsion system for our spacecraft? I mean, I was born in 1970, the year after Apollo 11 moon landing. So we are talking about a good 42 plus years of the "same old, same old". I don't mean to be pessimistic, but some serious lateral thinkers are clearly needed now.
  • 08.29.2012
  • Readers' Choice: Vote for your favorite Design Ideas
  • I agree with Luca Bruno. As a contributor to two Design Ideas during the year I believe the primary motivation was to share a concept with others of like mind who would derive the same satisfaction from the creation. Having a fair platform for comparison can only happen as Bruno suggests.
  • 08.24.2012
  • Solve design challenges
  • Well done! I am happy to finally see some guidance about how to submit a design idea. I remember writing not long ago to request that such information be put up. Just one thing though. Coming from a scientific research background I feel that a word or two about referencing sources would be in order - whether it is to EDN or other journals/magazine.
  • 08.09.2012
  • The rover's energy
  • Its all good but how cold is "cold" in space? A sense of the temperature differential existing in this glorified thermocouple would have done a lot of good to a reader such as me. It is also pretty clear that from 2kW to 0,12kW the efficiency of the module is very very low. The article should have expounded these aspects.
  • 03.13.2012
  • How to design a digital FM radio
  • A good article, but what is conspicuously missing is current trends in Software Define Radio (SDR). This is a technique where only the front-end of the receiver is in hardware and the rest of it i.e. demodulation, detection, audio, data, etc is implemented on a software platform. Ocaya, South Africa
  • 06.04.2012
  • Welcome to the new EDN.com
  • Hi Patrick, In the sentence before the circuit, shouldn't that be "... I have drawn ..."? I seem to remember reading a reader's comment somewhere on your website that technical editing of the site might be a good thing. May I suggest also textual editing? I respect EDN very much and such errors, however unwitting, take away a lot from the site.